Sean M. Carroll

Carroll is a theoretical physicist at Caltech, specializing in quantum mechanics, gravitation, and cosmology. He is the author of several books, including "The Big Picture,” "The Particle at the End of the Universe," and "From Eternity to Here.” He frequently consults for film and television, and has been featured on shows such as “The Colbert Report,” PBS's “NOVA,” and “Through the Wormhole” with Morgan Freeman.